RIGHT NOW AT 4 O'CLOCK.. 22 PROTESTERS -- WHO ALONG WITH DOZENS MORE, SHUT DOWN TRAFFIC IN THE CENTRAL BUSINESS DISTRICT... WERE ARRESTED THIS AFTERNOON. TODAY.. MEMBERS OF THE WORKERS CENTER FOR RACIAL JUSTICE BEGAN A SIT-IN AT THE IMMIGRATION AND CUSTOMS ENFORCEMENT OFFICE IN THE C-B-D. THEY'RE DEMANDING AN END TO WHAT THEY SAY IS A HARSH NEW PROGRAM OF COMMUNITY RAIDS BY ICE AGENTS. THE DEMONSTRATORS BLOCKED TRAFFIC... STARTING RIGHT AROUND LUNCHTIME... AND IT TOOK HOURS FOR THINGS TO GET BACK TO NORMAL. WE'LL HAVE MORE DETAILS ON WHAT PROMPTED THE PROTEST -- AND ON THE ARRESTS -- LATER IN THIS NEWSCAST.. AT 4:30. ANOTHER BIG STORY WE'RE